I've already put this on twitter but I figured put this on here so more people are aware, as we know with previous years like at the Maritim in Magdeburg, most high class hotels have minibars within the rooms.
Most people like myself don't use them at all, especially when you see the prices of some of the items!
Myself and my boyfriend reached out to the Estrel and they have said that for €5 they will empty the minibar fridge and allow you to store your own stuff within it, the €5 covers your entire stay and as far as we're aware it's a personnel/admin fee for the removal of the stock.
It's best if you do it ahead of time, all you need to do is contact them with your confirmation number (found on your room reservation email) at reservierung@estrel.com and ask for the minibar to be emptied, the €5 will be added onto your room charge.
Now I know that most people will not like having to pay for something to be removed which they didn't want in the first place, the Estrel still needs to make money in some way, the Minibar is a source of profit in most cases, so a small charge for something like this is almost to be expected.
Also whilst I cannot confirm this myself, if you empty the minibar yourself and place the items on the side, you may get charged for those items even if you don't consume them, I don't know how they deal with that but this is why me and my boyfriend reached out before hand to arrange something which is best for both parties.
If there's any questions about this, contact them at reservierung@estrel.com